CS 77 Bullet Proof

CS 77 Bullet Proof

Concept System 77 'Bulletproof' window

Optimized safety and comfort

Concept System® 77 “Bullet Proof” is an extension of CS 77 which enables the realisation of bulletproof windows and doors according to the most severe standards.


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Technical information


Min. Visible width frame-vent: inward opening5 1/16 in. 
Min. Visible width T-profile4 in. 
Max. height vent78 3/4 in. 
Max. width vent51 3/16 in. 
Overall system depth frame3 13/16 in. 
Overall system depth vent3 1/16 in. 
Rebate height1 in. 
Min. Glass thickness1 in. 
Max. Glass thickness2 1/16 in. 


Air tightness max. test pressure0.04 cfm/ft²
Water tightness12 psf
Design pressure120
Acoustic performance STC (ASTM E90-09/1332)43
Acoustic performance OITC (ASTM E90-09/1332)34
AAMA RatingClass AW
PG Rating120
Bullet resistance1
Thermal insulation Uw - Double0.24 Btu/hr∙ft²∙°F
Thermal insulation Uw - Triple0.17 Btu/hr∙ft²∙°F

Opening elements

  • Fixed WindowFixed Window
  • Inward opening combined elementsInward opening combined elements
  • Inward Opening TiltInward Opening Tilt
  • Inward Opening Tilt TurnInward Opening Tilt Turn
  • Inward Opening TurnInward Opening Turn
  • Inward Opening Turn TiltInward Opening Turn Tilt